Stuttgart 2012 – scientific programme

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A: Fachverband Atomphysik

A 41: Poster: Ultra-cold plasmas and Rydberg systems

A 41.10: Poster

Thursday, March 15, 2012, 16:30–19:00, Poster.V

Interplay of conical intersections and entanglement transport in two-dimensional flexible Rydberg aggregates — •Karsten Leonhardt, Sebastian Wüster, and Jan-Michael Rost — Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187 Dresden, Germany

Dipole-dipole transfer of electronic excitations on aggregates of atoms or molecules is important in many areas of physics, such as photosynthetic light-harvesting [1] or trapped assemblies of Rydberg atoms. The dipole-dipole interactions can also induce motion of the atoms in the chain [2]. In such a flexible aggregate, ring geometries exhibit conical intersections (CIs) [3] while one-dimensional linear geometries possess entanglement transporting modes [4, 5]. Here we combine both features and study two-dimensional, parallel-chain arrangements of Rydberg atoms. We locate CIs and highlight dynamical scenarios where directed transport is affected by the CIs.

[1] R. van Grondelle and V. I. Novoderezhkin, Phys. Chem. Chem. Phys. 8, 793 (2006).

[2] C. Ates, A. Eisfeld, and J. M. Rost, New J. Phys. 10, 045030 (2008).

[3] S. Wüster, A. Eisfeld, and J. M. Rost, Phys. Rev. Lett. 106, 153002 (2011).

[4] S. Wüster, C. Ates, A. Eisfeld, and J. M. Rost, Phys. Rev. Lett. 105, 053004 (2010).

[5] S. Möbius, S. Wüster, C. Ates, A. Eisfeld, and J. M. Rost, J. Phys. B: At. Mol. Opt. Phys. 44, 184011 (2011).